1. What is the primary role of aerobic respiration in organisms?
2. What is the primary function of homeostasis in living organisms?
3. What is the primary function of alveoli in the lungs?
Characteristics of living organisms
Carry out nutrition, respiration, excretion, sensitivity, movement, control, reproduction, growth.
Cell structure — role?
Organelles perform specific functions within the cell.
Biological molecules — types?
Carbohydrates, lipids, proteins.
Diffusion — process?
Particles move from high to low concentration without energy.
Active transport — mechanism?
Moves substances against concentration gradient using energy.
Gas exchange in alveoli
Oxygen diffuses in, carbon dioxide diffuses out.
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